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    <title>Document</title>
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    <header>
      <h1>数据可视化Echarts</h1>
      <div class="showtime"></div>
    </header>
    <script>
      var t = null;
      t = setTimeout(time, 1000); //開始运行
      function time() {
        clearTimeout(t); //清除定时器
        dt = new Date();
        var y = dt.getFullYear();
        var mt = dt.getMonth() + 1;
        var day = dt.getDate();
        var h = dt.getHours(); //获取时
        var m = dt.getMinutes(); //获取分
        var s = dt.getSeconds(); //获取秒
        document.querySelector(".showtime").innerHTML =
          "当前时间：" +
          y +
          "年" +
          mt +
          "月" +
          day +
          "-" +
          h +
          "时" +
          m +
          "分" +
          s +
          "秒";
        t = setTimeout(time, 1000); //设定定时器，循环运行
      }
    </script>
    <!-- 页面主体部分 -->
    <section class="minbox">
      <div class="column">
        <div class="panel bar">
          <h2>柱形图-就业行业</h2>
          <div class="chart"></div>
          <div class="footer"></div>
        </div>
        <div class="panel line">
          <h2>
            折线图-人员变化<a href="javascript:;">2020</a
            ><a href="javascript:;">2021</a>
          </h2>
          <div class="chart"></div>
          <div class="footer"></div>
        </div>
        <div class="panel pie">
          <h2>饼状图-年龄分布</h2>
          <div class="chart"></div>
          <div class="footer"></div>
        </div>
      </div>
      <div class="column">
        <div class="no">
          <div class="no-hd">
            <ul>
              <li>1000</li>
              <li>2000</li>
            </ul>
          </div>
          <div class="no-bd">
            <ul>
              <li>前端需求人数</li>
              <li>市场供应人数</li>
            </ul>
          </div>
        </div>
        <div class="map">
          <div class="map1"></div>
          <div class="map2"></div>
          <div class="map3"></div>
          <div class="chart"></div>
        </div>
      </div>
      <div class="column">
        <div class="panel bar2">
          <h2>柱形图-就业行业</h2>
          <div class="chart"></div>
          <div class="footer"></div>
        </div>
        <div class="panel line2">
          <h2>折线图-播放量</h2>
          <div class="chart"></div>
          <div class="footer"></div>
        </div>
        <div class="panel pie2">
          <h2>柱形图-地区分布</h2>
          <div class="chart"></div>
          <div class="footer"></div>
        </div>
      </div>
    </section>

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